GB 31604.48-2016 Translated English of Chinese Standard. GB31604.48-2016: National standard for food safety - Food contact materials and products - Determination of formaldehyde migrationhttps://www.chinesestandard.net, 21 mai 2017 - 13 pages This Standard specifies the spectrophotometric method for the determination of formaldehyde migration in food contact materials and products. This Standard applies to the determination of formaldehyde migration in food contact materials and products. |
Expressions et termes fréquents
1000 mL volumetric 40 C water absorbance value acetylacetone solution ammonium acetate arithmetic mean bath for 20 blank test Calculation of formaldehyde Chromotropic acid colorimetric cuvette concentration of formaldehyde detection limit Determination of formaldehyde DILUTE with water food contact materials food simulants formaldehyde in food formaldehyde migration formaldehyde standard stock Glacial acetic acid guarantee reagent Hydrochloric acid iodine materials and products MEASURE the absorbance mg formaldehyde migration in food milligrams mL colorimetric tubes mL of formaldehyde mL of simulant mL of sulfuric mL volumetric flask mol/L OBTAIN the formaldehyde PIPETTE 5.0 mL PLACE the colorimetric Potassium Iodide Preparation of standard quantitation limit reagent and water Sodium hydroxide solution after chromogenic solution and blank solution at 410 solution at 574 solution is prepared solution series/(mg/L standard curve standard solution standard stock solution standard use solution standard working curve standard working solution sulfuric acid TAKE the blank TAKE the concentration water bath